Improvement in machine for driving rake-teeth



fitnitcd Agittata @tutti @Wire f 'A N. M. BARNES A. v-T. BARNES,` OF TIFFIN, OHIO, ASSIGNORS TO THEM-' SELVES AND TIFEIN AGRICULTURAL WORKS, OE SAME PLACE.

Letters Patent No. 96,185, dated October 26, 1869.

The Schedule referred to in these Lettera Patent and making part of the same.

To all whom Iit may concern:

Be it known that we, N. M. BARNES and A. 'l. BARNES, of Tiffin, in the county of Seneca, and State of Ohio, have invented a new and improved Machine for Driving Rake-Teeth; and we do hereby declare that the `following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a frontelevation,

Figure 2 is a vertical section through line a; :Lof e 1- The object of this invention is to constructasimple and convenient machine'for driving wooden'teeth into the heads of horse hay-rakes, that will perform the work more quickly, cheaply, and ac urately, and with less dangery of breaking or battering the teeth, than can be done by hand` To this end, the machine consists of a supportingframe, la crank placed upon a shaft, a rod connecting the crank with a cross-head working in guide-ways, a hammer attached to the cross-head for the purpose of driving the teeth, a rest to support the rake-head while the teeth are being driveiuand a stop, operated by a spring or'otherwise, to arrestand hold the tooth when it arrives at the'proper point under the'hammer, and

directly in the line -of its movement.

In the drawings A is the frame;

B is the shaft, supporting a driving-pulley, b, and a crank, C ;4

l) is a rod connecting the crank to a cross-head, F, which runs o n guide-ways, E E, and' carries a heavy hammer, F,the face of which has a conical depression in it that fits over the end of' the rake-tooth when the hammer strikes the latter, and thereby prevents the tooth'- from being'broken or battered by the heavy blows it receives;

G g, H h, are rests, which support and guide the rake-head, the body of the lutter sliding between the lower end of the part g, and the upper edge of the part H, and l*clieteeth resting against the front sides of the parts G H, (the one which the. hammer is dri`ving also resting against'ihe front side of the part g, while the one opposite to it rests against the front side of the part h,beneath it;) I is a broad standard in front ofl the rake-head, the under teeth passing behind it, and the head itself resting upon its upper edge, as shown in iig. 2; and

it aretwo stops, with bevelled ends, actuated by a A spring, J, orv other equivalent device, in such a man ner that they will yield to let a tooth passin between them, as the rake-head is slid between the guides G 'H I but, when the tooth gets between them, will thrust themselves out on on each side of it. and hold it immovable direct-ly under the hammer, so that the latter, being put into operation by the rotation of shaft B, will rapidly and accurately .drive the tcoth into the rake-head.-

The shaft B should be made strong enough to resist the pressure required, and may be driven by a piniongear, belt, and pulley, or any other suitable means.

It should make about fourteen revolutions per minute.

T he supporting-frame should be made suiiiciently strong and stifi` not to spring while the machine is in operation.

The parts H h and I are made of the same height,

,the rake-head being supported upon thern, andthe lower teeth passing between them. The distance between the parts g H should be just sutiicient to permit the head to slide easily. The machine may be used either in a horizontal or perpendicular position, but the latter is the most convenient, and requires less room. i

The mode of operating the machine is as follows: When the heads and teeth are all finished and ready to drive, the operator takes his place in front of the 'machinc, so as to work the spring or lever withone hand, and assist in sliding the rake along with the other. One assistant then lays out the heads, and places the teeth in the holes, the whole length of the head, pushing them inl as far as he can with his hand. Another assistant then takes the head and places it in line with the machine, the head resting upon the guide-rests, andinoves it along so that the rst tooth comes against the stop, directly under the socket in the hammer, when the latter, which is moving all the time, comes down and drives the tooth the length of the crank. As it rises, the next tooth is slipped in its place, and so on, and when the last tooth is reached, another assistant has placed another head in line,A which follows the irst, sothat no stroke of the machine need be lost in changing from one head to auother. Four men, with this machine, will drive from seven hundred to eight hundred teeth per hour, or seven thousand to eight thousand per day 0f ten hours.

The teeth may be driven ast-ight as is desired, or as tight as the timber will stand, and the machine will perform the' same amount of work as though they `were driven losel The advantages of this machine are- First, ease of operation. Secondly, rapidity, doing more work with four men than could be d one by twelve in the lsame time by' hand.

vvrlhirdly', accuracy, each tooth being driven j ust so far, and all in perfect line with each other, so that thef .points of the teeth, the whole length of the head, will to pass between them, substantially as and for the purpose` specified. y

3. The spring-plate J, combined with the lugs i1', and arranged and operating with respect to the rakehead, substantially-as set forth.

N. M. BARNES.

Witnesses:

A. G. SNEATH, L. A. HALL. Witnesses:

B. G. A'rxms,

N. L. BREWER.

A. '1'. BARNES. 

